• 한국화재소방학회논문지
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• 제8권2호
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• pp.3-15
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• 1994

The purpose of this paper is to present refernce data to be considered in designing for the fire safety of high-rise office buildings. This paper deals with the characteristics of high-rise office buildings in the fire safety aspects, the basic principles for the fire safety of high-rise office building design, and this study is focused particularly on the location of the escape route of core plan for fire safety in high-rise office buildings.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2004년도 추계학술발표회 논문집
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• pp.173-178
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• 2004

This paper presents photogrammetric processing to generate digital elevation models and deals with the accuracy potential of SPOT-5 HRG supermode imagery for DEM generation. The DEMs obtained from digital topographic maps of 1/5000 scale were used as the refernce DEM data. DEMs extracted from HRG dats were compared with digital topograpic map DEMs on severed test sections. And digital surface model(DSM), refering to above the ground like buildings, was produced about the test built-up area.

• 전자공학회논문지S
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• 제34S권12호
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• pp.10-18
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• 1997

The parallel trabutary signals in the SDH-based transmission system have the frame phase skew due to uneven transmission delays in the data and the clock path. This phase skew must be eliminated prior to synchronously multiplexing process. A new twenty-four channel, 51.84Mb/s DFPA(Digital Frame Phase Aligner) has been designed and fabricated in 0.8.mu.m CMOS gate array. This unique device phase-aligns the skewed input signals with refernce frame synchronous signal and reference clok for subsequent synchronous multiplexing process. the performance of fabricated device is evaluated by the STM-16 transmission system and DS-3 meansurement set. The frame phase margin of +2/-3 bit periods has been demonstrated.

• 유체기계공업학회:학술대회논문집
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• 유체기계공업학회 2005년도 연구개발 발표회 논문집
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• pp.200-204
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• 2005

A few intake stations have vibration problems caused by pumps, motors and pipes. The vibration transffered from pumps, motors and pipes excites buiding severely. Therefore, the crack is generated on building wall and people who work at intake station are damaged. In this paper, the vibration and noise have been measured and analyzed for pumps, motors, pipes and building at intake station. Also, the cause of vibration and noise is identified. Finally, the reference of vibration and noise is established using results of measurement.

• 한국지능시스템학회논문지
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• 제4권1호
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• pp.24-34
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• 1994

A RMFSOC(Reference Model Following Self-Organizing Fuzzy Logic Controller) is propose in this paper. In the RMFSOC, the refernce model is introduced, where the desired control performance can be specified by an operator of the controlled process. The self-organizing level of the RMFSOC organizes the control rules of FLC which make the process output follow the reference model output. In addition, for the use of preventing improper modifications of control rules, a complementary decission rule is induced from the possible relations between the process output and reference model output. Through a simulation study, it is shown that the robustness of the control system using the proposed RMFSOC to the set-point changes and distur bances can be greatly improved being conpared with that of the control system using the Procyk and Mamdani's SOC.

• 대한전자공학회논문지
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• 제18권2호
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• pp.44-53
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• 1981

Stochastic feference를 가진 두개의 양자화 시스템을 분석하고 비교하였다. 양자화된 출력신호에 대하여 invariance 성격을 갖기 위한 조건이 서로 같다는 것이 보여졌다. Stochastic fererence 신호를 이용한 polarity coincidence 방법에 의한 상관관계 함수 추정이 여기서 구한 일반적 성질의 특수한 경우이다. 과거의 stochastic computing은 여기서 고려한 첫 번째 system으로부터 나오고 그리고 LG Robert가 이용한 특성은 두 번째 시스템의 일반적 성질의 특수한 경우를 이용했다는 것을 보였다.

• 한국정밀공학회지
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• 제12권8호
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• pp.168-175
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• 1995

A robust speed control algorithm under disturbances and reference change is developed using the self tuning control method in order to control induction motors. The method incorporates the concepts of the well known internal model principle and the annihilator polynomial. The effectiveness of the method is evaluated through the speed control experimental results of an induction motor for refernce change and arbitrary distrbance.

• 한국광학회지
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• 제2권4호
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• pp.179-185
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• 1991

적외선 광원으로 $CO_2$ 레이저를 사용하였고 광속을 2.5 cm의 직경으로 확대하여 Twyman-Green 간섭계를 구성하였다. 각종 렌즈는 Ge 렌즈로, 광속분리기는 ZnSe 평행판으로 택하였다. Pyro-electric vidicon camera에 의해 CRT monitor에 간섭무늬를 제시하며 image card에 의해 digitize되고 PC로 강도분포가 입력되어 data처리된다. 여기서, 적외선 간섭무늬는 thermal paper 상에 기록하였다. 가시영역에서는 He-Nefp이저를 광원으로 하고 CCD 카메라로 검출하여 CRT monitor에 제시하였다. 파면수차함수, PSF, OTF가 계산되어 3차원 그래프로 제시되며 프린트 된다.

• Journal of Advanced Marine Engineering and Technology
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• 제22권3호
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• pp.320-327
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• 1998

The purpose of this study is to design the intelligent speed control system for marine diesel engine by combining the Model Matching Method and the Nominal Model Tracking Method. Recently for the speed control of a diesel engine some methods using the advanced control techniques such as LQ control Fuzzy control or H$\infty$ control etc. have been reported. However most of speed controllers of a marine diesel engine developed are still using the PID control algorithm But the performance of a marine diesel engine depends highly on the parameter setting of the PID controllers. The authors proposed already a new method to tune efficiently the PID parameters by the Model Mathcing Method typically taking a marine diesel engine as a non-oscillatory second-order system. It was confirmed that the previously proposed method is superior to Ziegler & Nichols's method through simulations under the assumption that the parameters of a diesel engine are exactly known. But actually it is very difficult to find out the exact model of the diesel engine. Therefore when the model and the actual diesel engine are unmatched as an alternative to enhance the speed control characteristics this paper proposes a Model Refernce Adaptive Speed Control system of a diesel engine in which PID control system for the model of a diesel engine is adopted as the nominal model and a Fuzzy controller is adopted as the adaptive controller, And in the nominal model parameters of a diesel engine are adjusted using the Model Matching Method. it is confirmed that the proposed method gives better performance than the case of using only Model Matching Method through the analysis of the characteristics of indicial responses.

• 대한공간정보학회지
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• 제14권4호통권38호
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• pp.61-70
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• 2006

본 논문에서는 SPOT 5호 HRG 스테레오 영상을 이용하여 수치표고모형을 생성하기 위한 사진측량학적 처리과정을 제시하고 수치표고모형 생성을 위한 HRG supermode 영상의 정확도 잠재성을 평가하고자 하였다. 센서모델링을 위하여 광속조정을 행한 후 에피폴라 영상재배열과 영상정합 과정 등을 통하여 수치표면모형을 생성하였다. HRG 영상으로부터 추출된 DEM 성과를 축척 1:5000의 수치지형도로부터 추출된 기준 DEM과 여러 시험구간 상에서 비교하였다. 전체구간 중 5m 미만의 DEM 오차를 나타내는 부분의 비율은 53.8%이었고, 5m를 초과하는 오차부분은 구름, 수역, 건물 등에 의한 영향을 받는 것으로 확인되어 이러한 지역을 제외하고 평가한 정확도는 약 2.5m의 RMSE를 나타내었다. 아울러 추출된 수치표면모형(DSM)을 사용하여 3차원 건물모델과 대상지역 전체의 3차원 가시화 모델을 작성하였다.